Coal-magazine for automatic stokers.



PATENTED APR. 2, 1907.

I.. DE W. SMITH. GOAL MAGAZINE IOR AUTOMATIC SIoKIIRs.'

APPLICATION FILED 0035.14. 1905.

2 SHEETS-SHEET 1.'

INVENTO/e. y

Y Mdm/,1155555 No. 848,861. A PATBNTIID APR.. 2, 1907.

y L. DE W. SMIIII;

GOAL MAGAZIIIA1 FOIA AUTOMATIC SIOIIBIIS.

APPLICATION FILED 00T. 14, '1905.

2 SHEETS-SHEET 2.

pinnen srnrns rA'rnNr einen LLUYD yDE Wi'iT SMITH, F'DETROIT, MlCHlGAN.

@GAL-MAGAZINE FOR UTOWITI STOKERS..

ne. efiaeei.

To all whom t may concer-re:

i Be it known that l, LLorn DE WITT SMITH',

a citize'norn the United States of America, re'- j sidinfy at' Detroit, in the county of Vlayne tate of Michigan, have invented certain new and useful improvements in Coal-Magazines for Automatic Stokers, of which the fol-v lowing is a specification, reference being had and It is also an object of the invention Vto pr`o-.

videa cast bottom plate which is very rigid, strong, and durable andto rovide the same With certain other new and useful features, all as hereinafter more fully described, reference being had to the accompanying drawings, inv.fhicli.l

i Figure 1 is a perspective view of a magazine embodying 'the invention with parts broken away to show the construction and showing the same in operative position within a furnace. Fig.. 2 is. an enlarged horizon- :f tal 'section through the` magazinefdetached 3 5 from furnace, abov'e the bottom plate, With the arch-plate removed. Fig. 3 is a transverse vertical section throughtli'e, magazine, looking toward the front end thereof. Fig. 4 is a similar view looking toward the rear end, and'Figi is a detail showing the end walls of themagazine invertical section with the bottom plate iny osition thereon. As shown int e drawings, 1 represents the "ffurnace-arch supported upon the arch-plate 2, which also forms the inner side of the coalmagazine 3. Beneath the magazine and its discharge opening'or mouth Iis the vcokinglate 4^. against which the inclined; grate-bars` P e l.,

l rest at'their upper ends and upon which the shaft mounted in bearings beneath the boxes und provided with segments S, extending. upward inthe .boxes linto, engagement with racks 9 thereon, all of these partsibemg Specification of Letters Patent. Application tiled October 14, 1905. Serial o. 282,708.

' rovide Stoker-boxes 6 are moved laterally by a rack# constructed and arranged man oldandwell` Patented April 2,'19021- `The coal-magazine consistsv of a top plate 10, rovided with an opening through which coa may be introduced into thev magazine either mechanically or Vby hand,Vv the vvertical cast back 'Wall 11 the rear end Wall orcasting 12, the'front end casting 13, and the inclined bottom late 14.v The furnace-front 415 is dpwith a door 16 oppositetlie operi orWard end of .the magazine, through which door the operator may view the interior Vof the magazine or may introduce coal. i The inclined bottom plate 14 is subjected to extreme heat, and therefore is'liable to be burned out or warped, and this is especially true when the bottom is made of more than one part or a triangular bottomsupporting bar and a light plate supported by said bear. It is necessary that the bottom be stili and heavy enough so that when subjected to extreme heat and the Weight of the coal in the j magazine it will not sag or bend and by contacting .the Stoker-boxes prevent their vfree movement. For this reason l prefer yto use a heavy cast plate which is formed with a heavy longitudinallyextending ribL 17, eX tending at right angles to its lower side near its lower edge and together with saidedge of the' platel forming a triangular-shaped strengthening edge. Transverse webs 1S at intervals throughout the length of the plate connect said rib and plate andY further v strengthen the bottom. l

it is very desirable that the bottom plate be so made and held inplace fin the magazine that it maybe quickly andeasily removed for the purpose of repair or replacing Without the necessity of taking the furnaceapart or even stopping its operation, and therefore vit is sup orted at its ends in bearings on the end Wal s of the magazine, from whichbearings it may be readily lifted and drawn out through the door in the furnace-front. j kUpon therea'r end of the plate at its lower edge is a t1ia ngular-shaped projection or lug. 19 toengage a` recess 20 Ofsimilar form in' therear end Wall l12, said recess being formed somewhat larger than the lug `to Ipermit ,the :lug to turnslightly therein when thel plate is-tilted, vasshown in dotted lines inlig. 4, to disengage its upper edge ffronr beneath: an inwardly-.projecting shoulder 21 on the baclrivall -'1r-1,. the plate when in place normally resting aiongits upper edge upon an inwardlyfextendinginclined iiange 22 onsaidback Wall with said edge beneath the shoulder. An inclined rib 23 is provided on the rear end Walltoengage the lower side of the plate at its rear end. In the front end casting 13 is formed a pocket .24 to receive the projecting end of the bottom plate, the bottom 2.5 of the pocket forming a seat for the plate, the end of which is forme-d with a laterally-extending web or end fia-nge.

the pocket downward and inward and the endof the bottom plate is similarly formed, so that in inserting the plate when it is pushed in through the door and drops into the pocket the 'inclined side will force the plate longitudinally and engage the lug 19 on its rear end with the recess in t-he rear end wall. A wide flange or ledge 2S, formed at the upper end of the end casting 13, extends forward to the door-opening in the furnacefront, and a downwardly-extending triangular-shaped end flangeQQ projects outward from that portion of the end of the bottom plate which extends vabove the ledge when the plate is in place' and engages the upper surface of said ledge. In this liange 29 is a hole 30 for the insertion of a bar by'means of which the plate may be lifted or pried from beneath the shoulder 21, the same turning upon. its lower edge or point within the pocket at its forward end and upon the corner of its lug within the recess at its rear end and may then be lifted at its forward end and drawn out through the door-opening. The end casting 13 is cut away from its lower side upward into the pocket a short distance, so 'th tt the rock-shaft, with its segments, may be removed endwise through an opening 31 in the furnace-front.` which opening is closed by a suitable plate.

Having thus fully described my invention, what I claim isl. In a magazine for automatic stokers, the combination with a side wall, of ends provided with bearings, and a cast bottom plate provided with a longitudinal rib extending from the lower surface of the plate at right angles thereto and at a short distance from one edge thereof to form with said edge a triangular-shaped strengthening edge and having a series of transverse webs connecting the plate and rib .and formed with projections on the ends of, the plate to engage the bearings and support the plate at each end.

2. ln a magazine, for automatic stolers, the combination with a side wall, of a rear end wall formed with a bearing, a front end wall formed with a pocket open at the top and side, a plate adapted to form an inclined bottom for the magazine engaging the pocket at its forward end and provided with means on the rear end of the plate to engage the bearing.

3. In a magazine for automatic stokers, the combination with a side wall, of a rear end wall formed with a recess, a front end wall formed with a pocket open at its top and side, and a; plate adapted. to engage the pocket at its forward end and provided with a lug on its rear end to engage the recess.

4. In a magazine for automatic stokers,

clined bottoni plate having a lug on its rear end, a rear end wall provided with a recess to receive said lug, and a front end casting formed with a pocket open at its top and side to receive the forward end of the plate by inserting the same through the open top, said pocket being formed with a front wall which is inclined inward and downward from the top of the pocket to engage the end of the plate.

5. In a magazine for automatic stokers, the combination of a side wall provided with an inwardly-projecting shoulder, a rear end wall formed with a recess, a front end formed with a pocket, and a bottom pla-te provided with a lug at its rear end to engage and turn in the recess and adapted to engage the pocket at its forward end and be supported with its upper edge beneath the shoulder.

6, In a magazine, for automatic stokers, the combination with a side wall, of 'a rear end wall formed with a recess, a front end wall formed with a pocket open at the top and one side, and a bottom plate adapted to be supported in an inclined position having a lug o'n its rear end to engage said recess and a laterally-extending end flange on its forward end to fit within the pocket and engage the side walls thereof when the plate is in it-s normal position, to prevent lateral movement of the plate.

7. In a magazine for automatic Stokers, the combina-tion of a side wall formed with an inwardly-projecting shoulder and an inwardly and downwardlyr extending longitudinal flange,Y an end wall formed with a recess, a front end wall formed with a pocket open at its top and side and formed with a front wall extending inward and downward from the t-op of the pocket, and a bottom plate adapted to engage the flange on the side wall beneath the shoulder and formed with an inwardly and downwardlT inclined endlto engage the inclined wall of the pocket and with a lug on its rear end to engage and turn within the recess.

stokers, the combination with a furnacefront having a door, of a verticalvside wall formed with a. longitudinally-extending supporting-llange, a. rear end wall formed with a triangular-shaped recess, a' front end casting extending upward to the bottom of the door inr the furnace-front and formed K with a pocket open ,at its top and inner side the combination with a side wall, of an in S. In a magazine for automatic side-feed.

Mesem and downward from the upper edge of the end at its 'Lipper edge to engage and rest upe'n casting and provided with a forwardly-ex the ledge.

tending vledge on its upper end, and an nln testimony whereof et; my signature ened detachable bottom plate having a lug :ifL pesenee of two Witnesses.

on its rear end to engage the recess in the LLGYD DE WITT SMITH. end Wall and a lateraly-extendng flange on Vfitnesses:

its forward end to t Within the pocket and @No F. BARTHEL,

provided with a, forwardly-projecting endg Tees. LoNesTAFF.

and having a front Wall extending nwad doWnWerdy-ezitending denge on its orwmd i@ 

